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Finding the Fourth Proportional to 426.18, 588.15 and 260.40

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Solution

The fourth proportional to 426.18, 588.15 and 260.40 is: 359.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    426.18 : 588.15 = 260.40 : x
  2. Step 2: Convert to fraction form
    426.18/588.15 = 260.40/x
  3. Step 3: Cross multiply
    426.18x = 588.15 × 260.40
  4. Step 4: Simplify right side
    426.18x = 153,154.26
  5. Step 5: Solve for x
    x = 153,154.26/426.18
  6. Step 6: Final answer
    x = 359.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.